Oil burner



May n3, 1924..v

B. E. TYLER OIL BURNER Filed Sept.- 5 1922 Patented May 13, 1924.

' BERT n.v TYLER., or EVEREM, WASHINGTON;

on. BURNER.

Application led September 5, 1922. Serial No. 586,178.

To all whom it may concern.: 1

Be it known that I, BERT E. TYLER', a citizen ofthe. United States,residing at Everett,- in the county of Snohomish and State ofWashington, have invented a new and useful Improvement in Oil Burners,of which the following is a specification.

My invention relates to improvements in oil burners, and particularly toburners of a type especially adapted for use in connection with` largefurnaces and for burning heavy oils; the principal object of theinvent-ion being to provide a burner equipped with a spiral deflectorwhich facilitates the mixing of the fuel oil with the air delivered intothe furnace, together with means for delivering air forcibly through thespiral passages of the deector and a pump mechanism for forciblydelivering oil 'to the burner. l

More specifically, it is the object of the invention to provide. aburner embodying a blower mechanism having an air discharge pipe forextension into the furnace, with a spiral dciiector located in thedischarge end of the said pipe; the detlector having spray openings inits spiral passages from which fuel oil is drawn by suction, gravity, orby pump pressure, to .be caught up by the air blast and delivered in awhirling spray into the fire box.

Other. objects ofthe .invention reside in the various details ofconstruction and combination of parts embodied in the device.

1n accomplishing these and other objects of the invention, I haveprovided the improved details of construction, thepreferred forms ofwhich are illustrated in the accom- Figure 2 1s an end view of thesame,particularly illustrating the means for driving the blower, the oil pipeconnections with the pump and the disposition of the spiral' burner inthe blower pipe.

Figure 3 is an enlarged end view of the burner.

Figure 4 is a side view of the same. Figure 5 is a central,'longitudinalsection of the oil pump housing' and spiral pump. lReferring., more indetail to the drawings,

1 designates what may be a fan blower of any standard type, having afanshaft 2 operatively connectedto be driven by an electric motor indicatedat 3; bot-h the fan housing and t-he motor being xedly secured to a baseplate 4 which may be supported, in any suitable manner, in front of theopening of the furnace with which the device is to lbe used. An airdischarge pipe 5 leads from the fan housing, and this may be extendedthrough an` opening 6 in the door 7 of the furnace, as shown .in Figure1, so that the blast of air will be directed into the fire box. In suchfurnaces the fire box preferably would be lined with brick or fire clay.

Disposed within the discharge end of the pipe 5 is a spiral burner 10,which is fitted to the inside diameter of the pipe 5 and consists offour spirally directed blades 11 formed integrally with a central core12. The blades have a pitch of approximately ,forty-five degrees withrespect to the core,

and the outer ends thereof extend beyond that end of the core, as shownbest in Figures 1 and 4, to form' a sort of mixing pocket 13.

The core of the burner is preferablyA tapered from its inner toward itsouter end, and has a central, tapered bore 14 therethrough. The outerend of the bore is closed by a plug 15 threaded thereinto and an oilsupply pipe 16 leads into its inner end. Small openings 17 are drilled,at an incline of, about forty-five degrees, into the outer end of thebore from withinthe air passages or channels 18 between the bladesthrough which oil may be discharged.

Oil for supplying the burner may be stored` inl a tank, as designated at20, and in the present construction, I have illustrated' a pump as ameans of forcibly delivering the oil to the burner. The pump showncomprises a cylindrical casing 21 'supported by i means of a bracket 22from the fan housing.

Fitted in the casing is a screw 22 having a -drive shaft 23 operativelyconnected with the fan shaft 3. An oil supply pipe 24: leads from thetank into one-end of the casing 21 and the pipe 16 which leads to theburner connects with the other end through a valve 25. A relief pipe 26also connects with the pipe 16 through a valve 27 and this leads l backinto the tank 20 to take care of any over supply that the burner can notuse. It is preferred to gradually decrease the spacing of the spiral ofthe pump from the inlet to the discharge end of the casing in order thata better pressure maybe efected.

Assuming that the device is Aso constructed and connected with a furnaceas illustrated, in operation the fan and pu'mp will be driven by themotor 3 to effect the discharge of an air blast Jinto the furnacethrough pipe 5 and the forcing .of oil through the pump to he spiral'burner through -pipe 16. As the oil is delivered through the burneropenings 17' it is taken up by the air and is delivered in a whirlingspray into the fire box thoroughly mixed with the air. l

If the burner is not able to take care o all oil delivered to it by thepump, the ex- Such a burner is especially useful for delivering oil tolarge furnaces and it Will effectively distribute the oil to all partsof alarge fire box. It also makes possible the burning of the low grade,heavy oils with the best results.

Having thus described my invention, what I claim as new therein, and.desire to secure by Letters-Patent, is: The combination with an airblower hav- .ing a discharge pipe andan oil delivery pump of a burnerfitted within the discharge end of the blower pipe and comprising acent-ral forwardly tapered core with sprally directed blades integraltherewith that terminate forwardly of the end of the core in spacedrelation to form an intermediate mixing pocket; said core being providedlongitudinally with an oil channel connected to receive oil from thepump and lia-ving discharge ports leading in a forwardly in- @lineddirection from the channel into the air passages between the blades. v

i BERT E. TYLER.

